Smoking pipe



Patented Oct. 14, 1947 2,428,824 SMOKING PIPE Edward M. Yamamoto, Spokane, Wash. Application August 22, 1945, serial No. 612,111

. 4 Claims.

The present invention relates to certain new and useful improvements in a smoking pipe and is I particularly directed to providing in the shank of the pipe, a number of parallel channels, interconnected in series, so as to provide a greatly elongated smoke passage extending back and forth in a zigzag fashion from the pipe bowl to the bit end.

This improved structure materially reduces the heat of the smoke and affords greater comfort in smoking. It is well known that vigorous smoking will sometimes heat up the pipe to an uncomfortable condition so that the smoke is hot enough to burn the smokers tongue. The present invention .obviates that inaptitude by greatly elongating the length' of the smoke passage without increasing the length of the pipe as va Whole. vThe invention affords the benet of an extremely long stem pipe without resorting to any increased length of the pipe.

The accompanying drawingshows an example of the physical embodiment of myinvention.

Fig.v l shows an elevation of the invention.

Fig. 2 shows a vertical longitudinal section of Fig. l.

Fig. 3 shows a vertical longitudinal section of the shank portion of the pipe, separately.

Fig. 4 is a vertical transverse section of the shank taken on the line 4--4 of Fig. 3.

Fig. 5 is a vertical transverse section of the shank taken on the line 5-5 of Fig. 3.

The pipe comprises a shank portion S having a boss I2 upon which the bowl I5 is mounted by means of a hollow adapter screw I4 which is recessed into the bottom of the pipe bowl as shown.

This shank portion S embodies a tubular outer wall II and a tubular inner wall Ill. This inner wall is spaced from the outer wall by four longitudinal wings 6, 1, 8 and 9, which form partitions dividing the shank S into four longitudinal channels A, B, C and D which surround the central channel E within the inner wall I0. These five channels have their ends connected in series so as to form one continuous smoke passage ve times the length of the shank S.

The bowl end of the shank S is closed by a threaded cap I6 and a suitable gasket I1 closing the ends of al1 of said channels. The opposite end of the shank has a nipple I8 threaded thereon and is provided with a centrally perforated gasket I9 closing the ends of all of said channels except the central channel E. The bit 20 is fitted into the nipple I8, and communicates with the central channel E.

The upper channel A communicates with the k bowl I5 through the bore I in the screw I4. .The

opposite end of this channel A commmunicates with the channel B through the passage 2 in the partition 6. Thus the channels A and B are connected together at the bit end or near end. At

the bowl end which may properly be called th'e far end, the partition 1 is cut away to form the passage 3 which connects the far ends of the channels B and C. The near end of the partition 8 is cut away to form the passage 4 which connects the near ends of the channels C and D. The far end of the inner wall I0 is cut away to form the passage 5 which connects the far end of the channel D with the central channel E. The bit 20 opens into the near end of the central channel E. I

It will be seen that smoke enters through' the opening and passes forwards through the channel A, then through the passage 2 and backwards through the channel B, then through vthe passage 3 and forwards through the channel C, then through the passage 4 and backwards through the channel D, then through `thel passage 5 and forwards through the channel E and into the bit 20. In` this manner the smoke travels back and forth' in a zigzag path Ve times as long as the shank of the pipe.

It will be seen that the invention provides a greatly elongated smoke passage and rassures a cool smoke. It will also be seen that the several smoke channels can be readily cleaned by removing the screw threaded nipple I8 and cap I B.

The five smoke channels have been shown by way of example, and the invention can equally well employ seven or nine smoke passages, as for instance if the illustrated channels A, B, C and D are made as round bores then there will be room for four other round bores between them, making nine channels in all, and these can be connected in series so as to form a continuous passage.

Various modications may be resorted to Without departing from the invention as defined in the following claims.

I claim as my invention:

1. A smoking pipe comprising a shank portion having an outer wall `and an inner wall, said inner wall forming a central tubular channel in said shank, longitudinally extending wings forming partitions between said inner and outer walls and dividing the space into four channels surrounding said central channel, a pipe bowl mounted upon said shank, a closure for the bowl end of said shank, a nipple threaded onto the opposite end of said shank and closing said 3 four channels, and a bit engaged in said nipple and communicating with said central channel, said bowl communicating with one of said four channels, the bit end o-f that channel communieating with a second channel, the bowl end of said pipe bowl and said bit.

2. A smoking pipe comprising a shank portion having a central channel and an even number-of surrounding channels al1 extending parallelefrom,

end to end of said shank, a nipple thread'e'o'lA upon vsaid shank and closing all but said cf'eisr'alv clan nel, a bit fitted into said nipple and communicate ing with said central channel, a closure l`threaded Ontothe fatemi 0f Said ShmkY and 910mg the secured tosaid `slianl; 1 a1 d municatin'gfwith the4 far, Y end of one Yof -saidfchannelslfall "of hannelsbing Qdneqted inpserii; conti A' bi1;

all but 'saidVVV central' channel# a Vcentrally perfo;k

- 4 shank and communicating with the far end of one of said outer channels, all of said outer channels being connected together in series between said pipe bowland the far end of said central 5 channel to form a continuous zigzag passage back and forth between said lbit and said pipe bowl.

4. A smoking pipe comprising a shank portion having a central channel and an even number of parallelchannels extending fromend to end of said shank, a nipple threaded onto one end of said shank and closing all but said central chanjnel, a centrally perforated gasket interposed bev tween said nipple and said shank, a'bit tted into. said-nipple and communicating with said cen--Y tralmchannel, a closure threaded onto the far end of said shankand closing the far end of all of saidclahnel's", ag'asket interposed between said ,closureand said shank, and a pipe bowl mounted up'n'sad` shank and communicating with the far dendmof one* ofsaid parallel channels, all of said parallel" channels" jbe'ingY connectedY together iii-serie'sbetweenhsaid pipe llflowl and the fare'nd of :said fcentral channel to` form a continuous;

zigzag-passage back and vf'irtl'i betweensaid bit i and said pipe bowl. 

